It’s not hard to believe that big names and brands are late to the game each time a new social network arises. However, you don’t see domain squatting of this magnitude on Facebook or Twitter, since each network has a policy to bump impersonators.

Could it be that these brands simply haven’t bothered to contact Pinterest to reclaim their names?

A Microsoft employee who asked not to be named told the Daily Dot that repeated attempts to contact Pinterest had been fruitless, and the company was unable to retrieve the Bing or MSN usernames on Pinterest.

Instead, the company has ended up with—let’s be honest here—the ridiculously lame usernames Bing Is For Doing and MSNUS. The latter sounds like a noise a Norwegian makes when sneezing.

If Pinterest continues its unresponsive ways, Microsoft may be stuck with these—or may be forced to take an extremely awkward enforcement action through the courts against the Pinterest users who registered its trademarks as their usernames.

(A Microsoft spokesperson could neither confirm nor deny that Microsoft had attempted to contact Pinterest. To which we can only respond: MSNUS.)

Pinterest complied, but did not give the original Mitt Romney name to the GOP candidate. Romney’s name now redirects to the profile page of a Pinterest engineer, Alonzo Gomez.

Pinterest Trademark Page states that: “Accounts with usernames, Pin Board names, or any other content that misleads others or violates another’s trademark may be updated, transferred or permanently suspended.”

It then invites affected parties to fill out a trademark complaint form. However, we’ve seen very little evidence to show the company actually reads it.

We know how Pinterest CEO Ben Silbermann will likely explain this: It’s just not a priority compared to making the site “beautiful,” as he told attendees at the recent SXSW Interactive conference.

But there’s nothing beautiful about a site full of deceptive usernames, where people can’t find the brands they want to follow.